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Q: How should we signal in traffic circles? I never know if I should signal as I get into them or when I’m getting out. I think they would go faster if we all knew what to do.

A: You should do both, said Sgt. Steve Babb of the Washington State Patrol. State law also requires that drivers signal when changing lanes within roundabouts that have multiple lanes — and on any other roadway where you’re changing lanes or turning, for that matter, for those of you who have forgotten your manners.

• Speaking of roundabouts

Here’s an update on the state’s redesigned traffic circle at Lakemont Boulevard Southeast and West Lake Sammamish Parkway Southeast in east Bellevue that has been the scene of some lengthy traffic backups since school started last month at nearby Sunset Elementary.

State Transportation Secretary Doug MacDonald says the new design — a wider circle without the right-turn lane that connected two segments of West Lake Sammamish Parkway — should have worked fine if morning traffic hadn’t unexpectedly jumped by 67 percent, largely from commuters spilling off I-90 to take West Lake Sammamish Parkway as a shortcut, presumably to Redmond.

“It didn’t work out as expected. Backups occurred to an entirely unforeseen extent and to your considerable and understandable irritation,” MacDonald wrote in a recent e-mail to one of many upset neighbors.

The state has added a metering light to try to stem the tide of cars streaming into the circle from Lakemont and give those entering from other directions a break to merge in. The state also intends to restore that extra lane to connect the two segments of West Lake Sammamish Parkway by the end of this month.

Kirkland: All lanes of Northeast 132nd Street under Interstate 405 will be closed Monday through Saturday nights from 8 p.m. to 6 a.m. for freeway-widening work through late October. Check www.wsdot.wa.gov/Projects/I405/TotemLake for the latest construction information.

Bellevue: Northbound lanes of Bellevue Way will close between Northeast Fourth Street and Northeast Eighth Street for crane work at Lincoln Square from 10 p.m. Saturday until noon Sunday. For more Bellevue traffic info, visit www.cityofbellevue.org/transportation.

Interstate 90: All lanes of westbound I-90 will close from 11 tonight to 6 a.m. tomorrow from Island Crest Way to the Mount Baker Tunnel so state crews can complete routine maintenance. The same segment of I-90 will close eastbound 11 p.m. tomorrow night until 6 a.m. Sunday Traffic will be diverted onto the I-90 express lanes.